<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>弹跳彩球</title>
  <link rel="stylesheet" href="styles/style.css">
</head>

<body>
  <button id="set-alarm">Set alarm</button>
  <div id="output"></div>
  <div>xiexie</div>
  <script src="scripts/main.js"></script>
</body>

</html>